CVE-2022-4020 is a high-severity vulnerability (CVSS 8.2) affecting the HQSwSmiDxe DXE driver on specific Acer Aspire and Extensa notebook models. An attacker with elevated privileges can exploit this flaw to modify UEFI Secure Boot settings by manipulating an NVRAM variable. This local attack has low complexity and can lead to high impact on confidentiality, integrity, and availability. While not currently listed on the KEV catalog, there is no public exploit code available, and it has garnered limited community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:acer:aspire_a315-22g_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:acer:aspire_a115-21_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:acer:aspire_a315-22_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:acer:extensa_ex215-21_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:acer:extensa_ex215-21g_firmware:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.